In Butler's A Different Kind of Summer, dating from 1967, the fifth outing for Detective Daniels, Daniels is still a sergeant when an unidentified body arrives on a train into town in a coffin minus head or hands. It's up to Daniels to figure out which of many missing women this could be, including an increasing number of young girls vanishing in London. As she gets deeper into the case, she tries to stay objective and focused even as she starts receiving menacing phone calls and has to deal with a new young assistant, Christine Quinn, and a hysterical troublemaker who claims she's lost her sister.